Frequencies for first 10,000 rows of pct012i100 variable in sf12010860us28 dataset :

   97 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,980       79.80       79.80
          1 |      1,177       11.77       91.57
          2 |        444        4.44       96.01
          3 |        182        1.82       97.83
          4 |        114        1.14       98.97
          5 |         54        0.54       99.51
          6 |         21        0.21       99.72
          7 |         11        0.11       99.83
          8 |          5        0.05       99.88
          9 |          4        0.04       99.92
         10 |          2        0.02       99.94
         11 |          1        0.01       99.95
         12 |          2        0.02       99.97
         13 |          1        0.01       99.98
         14 |          1        0.01       99.99
         15 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Apr 2017